The quality and success of library services to users at the City of Brampton Public Library and Art Gallery, Ontario, Canada, were investigated through a series of questionnaires, statistical data analyses, and comparisons with past use studies of this and other public libraries. The study utilized the operational methodology outlined by Altman in "A Data Gathering and Instructional Manual for Performance Measures in Public Libraries" with substantial refinements and adaptations to the Brampton situation. Data regarding patron characteristics, in-library use of materials, equipment and facilities, circulation, and staff interactions were collected on questionnaires and recorded on data gathering forms. Findings of the spring 1979 self-study provided a basis for comparative analysis with an earlier summer 1978 study and allowed for refinement of data collection techniques and operational methodology. These related to the system only; a more detailed analysis by branch, along with comparison with 1978 findings, yielded further insight into user satisfaction and user activity. Additional comparisons of use studies concerning libraries of comparable size to Brampton, and the present study revealed contrasting patterns of library use. Recommendations are presented in light of these findings, and data tables and questionnaires are appended. (CWM)